If you admit a mistake, it becomes part of your past. If you lie, it becomes part of your future.
Ephesians 4:21-25 (NLT) Since you have heard about Jesus and have learned the truth that comes from him, throw off your old sinful nature and your former way of life, which is corrupted by lust and deception. Instead, let the Spirit renew your thoughts and attitudes. Put on your new nature, created to be like God—truly righteous and holy. So stop telling lies. Let us tell our neighbors the truth, for we are all parts of the same body.